Used primarily as a photoinitiator in UV-curable systems, this compound plays a key role in polymer chemistry. It is especially effective in free radical polymerization of acrylates and methacrylates upon exposure to ultraviolet light. Commonly found in inks, coatings, adhesives, and dental materials, it enables rapid curing with low energy consumption. Its ability to cleave efficiently under UV light makes it suitable for clear and pigmented formulations. Also used in 3D printing resins where precise and fast curing is required.